These cowl ventilators are
made of flexible P.V.C. The ring nuts and mating deck flanges are made of
hard plastic. The cowl ventilators can revolve and are removable. No tools
are required, the ring nut can be loosened easily by hand. A Monel
mosquito screen and a stainless steel cover plate to close off the cowl
ventilator, can be supplied as an option.

For VETUS cowl ventilators,
types YOGI, TOM, JERRY and DONALD, we can supply a plastic dorade box.
This drains off any water entering the ventilator and can be closed off
entirely by means of the incorporated stainless steel mushroom ventilator.
The mushroom ventilator also includes a mosquito screen. The male deck
rings, made of either stainless steel or plastic, can be easily fitted to
the dorade box using the nuts and bolts supplied.